Investment banking mogul Edouard Stern was clad head-to-feet in a latex suit when he was found shot dead this week in his Geneva apartment, Swiss media reported yesterday as the mystery of his murder deepened.

Stern, 50, was found dead in the bedroom of his securely locked lodgings Tuesday by the wife of his building’s superintendent and three colleagues after he had missed several business meetings.

An investigating judge is releasing few details about the killing, but confirmed Stern was shot three times. Two bullets struck Stern in the head, said the Tribune de Geneve newspaper.

Another Geneva paper, Le Temps, speculated the latex suit indicated Stern’s killing may have had something to do with sadomasochistic sex. But the investigating judge said only that police are following a number of leads in the case.

“It’s a possibility” that Stern opened the door to his killer, the judge told a TV inerviewer.

Stern himself was a gun fancier, but the weapon used in the killing apparently was not found among the weapons in his collection, said Le Temps.